The structure of perpendicular bow shocks

Details The structure of perpendicular bow shocks The structure of perpendicular bow shocks

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.5081l&link_type=abstract

Journal of Geophysical Research, vol. 87, July 1, 1982, p. 5081-5094.

Mathematics

Logic

313

Atmospheric Models, Bow Waves, Computerized Simulation, Shock Waves, Beta Factor, Electrical Resistivity, Electron Energy, Ion Temperature, Mach Number

Scientific paper

A hybrid simulation model with kinetic ions, massless fluid electrons, and phenomenological resistivity is used to investigate the perpendicular configuration of the bow shocks of the earth and other planets. The range of parameters investigated includes the upstream Mach number, electron and ion beta (ratios of thermal to magnetic pressure), and resistivity. It is found that electron beta and resistivity have little effect on the overall shock structure. Quasi-stationary structures are obtained at moderately high ion beta, whereas the shock is found to become more dynamic in the low ion beta, large Mach number regime. The simulation results are shown to agree well with a number of observational features of quasi-perpendicular bow shocks, including the morphology of the reflected ion stream, the magnetic field profile throughout the shock, and the Mach number dependence of the magnetic field overshoot.

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